org.torweg.pulse.service.event
Class JFreeChartPNGOutputEvent

java.lang.Object
  org.torweg.pulse.service.event.JFreeChartPNGOutputEvent

All Implemented Interfaces:

Event

public final class JFreeChartPNGOutputEvent
extends java.lang.Object
implements Event

Version:

$Revision: 2026 $

Author:

Daniel Dietz

Nested Class Summary

Nested classes/interfaces inherited from interface org.torweg.pulse.service.event.Event

Event.Disposition

Constructor Summary

JFreeChartPNGOutputEvent(org.jfree.chart.JFreeChart chart, int width, int height, CacheMode cMode)
Creates a new JFreeChartPNGOutputEvent for the given chart with the given width and height for the PNG.

Method Summary

CacheMode	getCacheMode() returns the CacheMode.
boolean	isOutputEvent() Indicates if this Event will write to the OutputStream and so render the OutputStream unwritable for future results.
boolean	isSingularEvent() Indicates that the Event will only be added once to the EventManager and block all other Events.
boolean	isStopEvent() Indicates if the Invoker should proceed executing other bundles or if it should terminate after executing this Event .
void	run(ServiceRequest request) Writes the chart to the ServletOutputStream.
void	setCacheMode(CacheMode c) sets the CacheMode.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

JFreeChartPNGOutputEvent

public JFreeChartPNGOutputEvent(org.jfree.chart.JFreeChart chart,
                                int width,
                                int height, CacheMode cMode)
                         throws java.lang.NullPointerException,
                                java.lang.IllegalArgumentException

Creates a new JFreeChartPNGOutputEvent for the given chart with the given width and height for the PNG.

Parameters:

chart - the JFreeChart to create the PNG from

width - the width for the PNG

height - the height for the PNG

cMode - the CacheMode

Throws:

java.lang.NullPointerException - if chart or cMode is null

java.lang.IllegalArgumentException - if width < 0 | height < 0

Method Detail

run

public void run(ServiceRequest request)

Writes the chart to the ServletOutputStream.

Specified by:

run in interface Event

Parameters:

request - the current ServiceRequest

See Also:

Event.run(org.torweg.pulse.service.request.ServiceRequest)

isOutputEvent

public boolean isOutputEvent()

Description copied from interface: Event

Indicates if this Event will write to the OutputStream and so render the OutputStream unwritable for future results.

Please note: After writing to the OutputStream it should be flushed and closed.

Specified by:

isOutputEvent in interface Event

Returns:

true

See Also:

Event.isOutputEvent()

isStopEvent

public boolean isStopEvent()

Description copied from interface: Event

Indicates if the Invoker should proceed executing other bundles or if it should terminate after executing this Event .

Specified by:

isStopEvent in interface Event

Returns:

true

See Also:

Event.isStopEvent()

isSingularEvent

public boolean isSingularEvent()

Description copied from interface: Event

Indicates that the Event will only be added once to the EventManager and block all other Events.

If an Event of the same type has already been added to the EventManager, subsequent calls to EventManager.addEvent(Event) will return without adding the given Event.

Specified by:

isSingularEvent in interface Event

Returns:

true

See Also:

Event.isSingularEvent()

getCacheMode

public CacheMode getCacheMode()

returns the CacheMode.

Specified by:

getCacheMode in interface Event

Returns:

the cache mode

See Also:

Event.getCacheMode()

setCacheMode

public void setCacheMode(CacheMode c)

sets the CacheMode.

Specified by:

setCacheMode in interface Event

Parameters:

c - the cache mode to set

See Also:

Event.setCacheMode(org.torweg.pulse.service.request.CacheMode)